Split type flange assembly steel frame tool

Abstract

The invention provides a split type flange assembly steel frame tool, belongs to the technical field of flange assembly, and solves the technical problems of how to realize accurate assembly and deformation correction of a large-diameter split type flange, reduce the installation difficulty, shorten the construction period and improve the universality and stability of the tool at the same time. A split type flange assembly steel frame tool comprises hexagonal profile steel, extension steel is fixedly connected to the middles of the six edges of the outer side of the hexagonal profile steel, two second supporting legs are fixedly connected to the bottom of each extension steel, and second reinforcing ribs are fixedly connected to the two sides of the joint of each second supporting leg and the corresponding extension steel. The symmetrical supporting platform is formed by the hexagonal section steel and the six sets of extension steel, three fragmented flanges can be evenly supported, the flange placing horizontality is guaranteed, the jacks can be accurately aligned to the splicing positions of the fragmented flanges through the double adjusting structures, the jacking effect of the jacks is combined, flange deformation is effectively corrected, and the follow-up mounting quality of a tower is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of flange assembly technology, and relates to wind power tower installation, particularly a segmented flange assembly steel frame tooling. Background Technology

[0002] As a crucial component of the national "carbon peaking" goal, wind turbine towers will experience a new surge in development in wind power manufacturing in the near future. Onshore wind towers are evolving from 0.75MW per unit to 6.5MW or even larger. The increased capacity of wind turbines has led to a dramatic increase in tower size, with tower flange diameters increasing from approximately 3 meters to approximately 6 meters. However, with technological optimizations resulting in thinner flanges and tower bodies, previous construction techniques are no longer suitable for large-diameter wind towers, making technological innovation imperative. Flange deformation is a particularly prominent issue in large-diameter wind towers, especially with segmented flanges. The inability to effectively correct this in-factory process directly increases tower installation difficulty and time consumption by more than three times, significantly impacting project progress and failing to meet customer needs and satisfaction. Therefore, to ensure product yield and customer satisfaction, it is urgently necessary to develop in-factory correction tools for tower flange deformation. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a segmented flange assembly steel frame tooling. The technical problem this invention aims to solve is: how to achieve precise assembly and deformation correction of large-diameter segmented flanges, reduce installation difficulty, shorten the construction cycle, and at the same time improve the versatility and stability of the tooling.

[0004] The objective of this invention can be achieved through the following technical solutions: A segmented flange assembly steel frame fixture includes a hexagonal steel section. Each hexagonal steel section has an extension steel section fixedly connected to the middle of its outer six sides. Each extension steel section has two second support legs fixedly connected to its bottom. Each second support leg has a second reinforcing rib fixedly connected to both sides of its connection to the extension steel section. A common arc-shaped steel section is fixedly connected between the two second support legs of two adjacent extension steel sections near the hexagonal steel section. An arc-shaped slider is slidably fitted onto the top of the arc-shaped steel section. An arc-shaped T-slot adapted to the arc-shaped steel section is formed on the arc-shaped slider. A fastening bolt is screwed onto the outer side of the arc-shaped slider. A nut adapted to the fastening bolt is fixedly fitted onto the arc-shaped slider. A strip frame is fixedly connected to the top of the arc-shaped slider. Two guide rods are fixedly connected between the two ends of the strip frame. A common sliding block is slidably fitted onto the circumferential surface of the two guide rods. Both ends of the sliding block have circular holes adapted to the guide rods. A limiting mechanism for adjusting the position of the sliding block is provided on one side of the sliding block.

[0005] The above structure, with hexagonal steel sections and six sets of extended steel forming a symmetrical support platform, can evenly support the three segmented flanges, ensuring the horizontality of the flanges during placement. The cooperation between the arc-shaped steel sections and the arc-shaped slider allows for flexible adjustment of the jack in the circumferential direction, while the sliding connection between the guide rod and the sliding block allows for radial position adjustment of the jack. The dual adjustment structure can accurately align the splicing points of the segmented flanges, providing a guarantee for subsequent correction work. The addition of a second reinforcing rib enhances the connection strength between the extended steel and the second support leg, preventing deformation of the support structure under stress.

[0006] Preferably, the limiting mechanism includes a square rod fixedly connected to one side of the sliding block, a limiting block fixedly connected to the other end of the square rod, a pressing block slidably sleeved on the square rod, a square hole adapted to the square rod being opened in the middle of the pressing block, a spring sleeved on the square rod between the limiting block and the pressing block, and the limiting mechanism also includes a locking rod fixedly connected to both ends of the pressing block near the sliding block, and a pull rod fixedly connected to the other side of the pressing block.

[0007] With the above structure, the elastic force of the spring can push the pressing block to always maintain the tendency towards the sliding block, so that the locking rod can be stably locked into the limiting hole, realizing the rapid positioning of the sliding block; the pull rod is set to facilitate manual operation, and the locking rod and the limiting hole can be released by pulling the pull rod, making the operation convenient and efficient.

[0008] Furthermore, the strip frame has a straight hole on the side near the limiting mechanism, and the square rod is slidably connected in the straight hole. The outer wall of the strip frame has multiple limiting holes at equal distances on both sides of the straight hole, and the locking rod is adapted to the limiting holes.

[0009] With the above structure, the straight hole provides guidance for the sliding of the square rod, ensuring the smoothness of the sliding block movement; the setting of multiple sets of limit holes can flexibly adjust the fixed position of the sliding block according to the specifications of the segmented flange, improving the adaptability of the tooling.

[0010] Furthermore, rectangular holes are provided at both ends of the bottom of the strip frame, and a jack is fixedly connected to the top of the sliding block. The rectangular holes facilitate the discharge of debris inside the strip frame, thus avoiding affecting the movement of the sliding block.

[0011] Furthermore, a first support leg is fixedly connected to the bottom of the hexagonal steel section near each extension steel section, and a first reinforcing rib is fixedly connected to both sides of the connection between each first support leg and the hexagonal steel section, and the same reinforcing rod is fixedly connected between two opposite first support legs.

[0012] With the above structure, the first support leg provides stable support for the entire tooling, the first reinforcing rib enhances the connection rigidity between the first support leg and the hexagonal steel section, and the reinforcing rod makes multiple first support legs form an integral force-bearing structure, effectively dispersing the pressure borne by the tooling, avoiding deformation during long-term use or under stress, and ensuring the service life and safety of the tooling.

[0013] Compared with the prior art, the segmented flange assembly steel frame tooling of the present invention has the following advantages: 1. A symmetrical support platform, constructed from hexagonal steel sections and six sets of extended steel, provides uniform support for the three segmented flanges, ensuring their horizontal placement and laying the foundation for precise splicing. The combination of arc-shaped steel sections and arc-shaped sliders allows for flexible adjustment of the jacks in the circumferential direction, while the sliding connection between the guide rod and the sliding block enables radial adjustment of the jacks. This dual adjustment structure allows the jacks to be precisely aligned with the segmented flange splicing points. Combined with the lifting action of the jacks, it effectively corrects flange deformation, solves the problem of misalignment in the splicing of large-diameter segmented flanges, and significantly improves the flange splicing accuracy and the compliance rate of flatness and ellipticity, ensuring the subsequent installation quality of the tower and meeting the technical requirements of large-capacity wind towers.

[0014] 2. The tooling is easy to operate, requiring only two people to complete the task, without complicated procedures. The sliding adjustment of the arc-shaped slider and the quick tightening of the fastening bolts, as well as the quick positioning and unlocking of the sliding block via the pull rod of the limit mechanism, all simplify the assembly and adjustment steps, avoid the cumbersome calibration process in traditional processes, and significantly reduce installation time. This effectively solves the pain points of high installation difficulty and long installation time in traditional processes, ensuring project progress.

[0015] 3. Multiple sets of limiting holes on both sides of the strip frame allow for flexible adjustment of the fixed position of the sliding block according to the size requirements of different sized segmented flanges; the adjustable design of the arc-shaped slider on the arc-shaped steel further expands the applicability range of the tooling, making it suitable for the installation of segmented flanges of various diameters. There is no need to customize tooling for different sized flanges, resulting in high reusability and reducing the production cost of wind turbine tower manufacturing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a segmented flange assembly steel frame tooling proposed in this invention; Figure 2 This is a schematic diagram of the arc-shaped steel section of a segmented flange assembly steel frame tooling proposed in this invention; Figure 3 This is a schematic diagram of the top structure of the strip frame of a segmented flange assembly steel frame tooling proposed in this invention; Figure 4 This is a schematic diagram of the limiting mechanism structure of a segmented flange assembly steel frame tooling proposed in this invention.

[0017] In the diagram, 1. Hexagonal steel section; 101. First support leg; 102. First reinforcing rib; 103. Reinforcing rod; 2. Extension steel; 201. Second support leg; 202. Second reinforcing rib; 3. Arc-shaped steel section; 4. Arc-shaped slider; 401. Arc-shaped T-slot; 402. Fastening bolt; 5. Strip frame; 501. Rectangular hole; 502. Guide rod; 503. Sliding block; 504. Straight hole; 505. Limiting hole; 6. Limiting mechanism; 601. Square rod; 602. Limiting block; 603. Spring; 604. Compression block; 605. Clamping rod; 606. Pull rod; 7. Jack. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figures 1-4 As shown, a segmented flange assembly steel frame fixture includes a hexagonal steel section 1. Extending steel sections 2 are fixedly connected to the middle of each of the six outer sides of the hexagonal steel section 1. Two second support legs 201 are fixedly connected to the bottom of each extending steel section 2. Second reinforcing ribs 202 are fixedly connected to both sides of the connection point between each second support leg 201 and the extending steel section 2. A single arc-shaped steel section 3 is fixedly connected between the two second support legs 201 on the side of two adjacent extending steel sections near the hexagonal steel section 1. An arc-shaped slider 4 is slidably fitted onto the top of the arc-shaped steel section 3. The arc-shaped slider 4 has openings that correspond to the arc shape. The arc-shaped T-slot 401 is adapted to the steel profile 3. The outer side of the arc-shaped slider 4 is screwed with a fastening bolt 402. The arc-shaped slider 4 is fixedly fitted with a nut adapted to the fastening bolt 402. The top of the arc-shaped slider 4 is fixedly connected to a strip frame 5. Two guide rods 502 are fixedly connected between the two ends inside the strip frame 5. The same sliding block 503 is slidably fitted on the circumferential surface of the two guide rods 502. Both ends of the sliding block 503 are provided with round holes adapted to the guide rods 502. A limiting mechanism 6 for the user to adjust the position of the sliding block 503 is provided on one side of the sliding block 503.

[0020] The above setup provides a structural foundation for the precise assembly of segmented flanges, while also enhancing the support stability of the tooling and preventing deformation of the tooling from affecting the flange splicing quality during the assembly process.

[0021] Preferably, the limiting mechanism 6 includes a square rod 601 fixedly connected to one side of the sliding block 503, a limiting block 602 fixedly connected to the other end of the square rod 601, a pressing block 604 slidably sleeved on the square rod 601, a square hole adapted to the square rod 601 is opened in the middle of the pressing block 604, and a spring 603 is sleeved on the square rod 601 between the limiting block 602 and the pressing block 604.

[0022] Through the above settings, the limiting mechanism 6 has an automatic reset function. The elastic force of the spring 603 can ensure that the locking rod 605 and the limiting hole 505 are stably engaged, ensuring that the position of the jack 7 is fixed when it is working and improving the stability of the calibration process.

[0023] Preferably, the limiting mechanism 6 further includes a locking rod 605 fixedly connected to both ends of the extrusion block 604 near the sliding block 503, and a pull rod 606 fixedly connected to the other side of the extrusion block 604.

[0024] The above settings allow workers to quickly release the limit by pulling the lever 606, making the operation convenient, reducing manual labor intensity, and improving assembly and adjustment efficiency.

[0025] In this embodiment, a straight hole 504 is provided on the side of the strip frame 5 near the limiting mechanism 6, and the square rod 601 is slidably connected in the straight hole 504. Multiple limiting holes 505 are provided at equal distances on both sides of the straight hole 504 on the outer wall of the strip frame 5, and the locking rod 605 is adapted to the limiting hole 505.

[0026] The above settings make the movement of the sliding block 503 more stable, and the design of multiple sets of limit holes 505 expands the adaptability of the tooling and can meet the assembly requirements of different specifications of segmented flanges.

[0027] In this embodiment, rectangular holes 501 are provided at both ends of the bottom of the strip frame 5, and a jack 7 is fixedly connected to the top of the sliding block 503.

[0028] The above settings allow staff to monitor the working status of jack 7 in real time, adjust the lifting force and position in a timely manner, and ensure precise alignment of the flange joint.

[0029] Preferably, a first support leg 101 is fixedly connected to the bottom of the hexagonal steel section 1 near each extension steel section 2, and a first reinforcing rib 102 is fixedly connected to both sides of the connection between each first support leg 101 and the hexagonal steel section 1, and the same reinforcing rod 103 is fixedly connected between two opposite first support legs 101.

[0030] The above settings enable the tooling to form a stable overall load-bearing structure, effectively distributing pressure, preventing deformation during long-term use or under stress, extending the service life of the tooling, and ensuring the safety of the flange assembly process.

[0031] The working principle of this invention is as follows: When in use, three segmented flanges are placed on top of multiple extended steel sections 2. Each arc-shaped steel section 3 has a segmented flange supported at both ends of the extended steel section 2. Under the action of the hoisting equipment, the three segmented flanges adjust their positions to form a large annular flange. The position of the arc-shaped slider 4 is adjusted according to the connection points of adjacent segmented flanges, allowing the arc-shaped slider 4 to slide left and right on the arc-shaped steel section 3. After adjustment, the arc-shaped slider 4 is locked with fastening bolts 402. Then, the pull rod 606 is pulled, causing the pressing block 604 to compress the spring 603, thus separating the locking rod 605 from the limiting hole 505. The sliding block 503 allows the jack 7 to slide on the guide rod 502, adjusting the jack 7 to the bottom of the flange connection. Then, releasing the pull rod 606 fixes the position of the jack 7. Adjusting the jack 7 to rise causes its top to press against the flange ring connection, aligning adjacent flange connections and ensuring a stable flange connection. The second reinforcing rib 202, the first reinforcing rib 102, and the reinforcing rod 103 make the entire device stable and less prone to deformation, thereby improving the flange splicing quality and facilitating subsequent flange processing. The jack 7 of this device is easy to adjust, allowing for the splicing of flanges of different diameters.

[0032] In summary, this invention precisely solves the problems of deformation and misalignment in large-diameter segmented flanges. Through the synergistic effect of the dual adjustment structure and jack 7, the flange splicing accuracy is significantly improved, ensuring the tower installation quality and meeting the technical requirements of large-capacity wind towers. Simultaneously, it significantly improves construction efficiency, simplifies the assembly process, shortens the installation cycle, and addresses the pain points of traditional processes being time-consuming and difficult, ensuring project progress and customer satisfaction. Thirdly, the tooling structure is simple, the manufacturing cost is low, it is highly versatile and reusable, and it can be adapted to segmented flanges of various diameters, reducing the production cost of wind turbine tower manufacturing.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A split flange assembly jig for a steel frame, comprising a hexagonal section of steel, characterised in that, Each of the six sides of the hexagonal steel section is fixedly connected to an extension steel. Two second support legs are fixedly connected to the bottom of each extension steel. Second reinforcing ribs are fixedly connected to both sides of the connection point between each second support leg and the extension steel. A common arc-shaped steel section is fixedly connected between the two second support legs of two adjacent extension steel sections near the hexagonal steel section. An arc-shaped slider is slidably fitted onto the top of the arc-shaped steel section. An arc-shaped T-slot adapted to the arc-shaped steel section is formed on the arc-shaped slider. A fastening bolt is screwed onto the outside of the arc-shaped slider. A nut adapted to the fastening bolt is fixedly fitted onto the arc-shaped slider. A strip frame is fixedly connected to the top of the arc-shaped slider. Two guide rods are fixedly connected between the two ends inside the strip frame. A common sliding block is slidably fitted onto the circumferential surface of the two guide rods. Circular holes adapted to the guide rods are formed at both ends of the sliding block. A limiting mechanism for adjusting the position of the sliding block is provided on one side of the sliding block.

2. The segmented flange assembly steel frame tooling according to claim 1, characterized in that, The limiting mechanism includes a square rod fixedly connected to one side of the sliding block, a limiting block fixedly connected to the other end of the square rod, a pressing block slidably sleeved on the square rod, a square hole adapted to the square rod being opened in the middle of the pressing block, and a spring sleeved on the square rod between the limiting block and the pressing block.

3. The segmented flange assembly steel frame tooling according to claim 1, characterized in that, The limiting mechanism also includes a locking rod fixedly connected to both ends of the extrusion block near the sliding block, and a pull rod fixedly connected to the other side of the extrusion block.

4. The segmented flange assembly steel frame tooling according to claim 1, characterized in that, The strip frame has a straight hole on the side near the limiting mechanism, and the square rod is slidably connected in the straight hole. The outer wall of the strip frame has multiple limiting holes at equal distances on both sides of the straight hole, and the locking rod is adapted to the limiting holes.

5. The segmented flange assembly steel frame tooling according to claim 1, characterized in that, The bottom of the strip frame has rectangular holes at both ends, and the top of the sliding block is fixedly connected to a jack.

6. The segmented flange assembly steel frame tooling according to claim 1, characterized in that, Each hexagonal steel section has a first support leg fixedly connected to its bottom near each extension steel section, and each first support leg has a first reinforcing rib fixedly connected to both sides of the connection between the hexagonal steel section and the first support leg. The same reinforcing rod is fixedly connected between two opposite first support legs.

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